Briefintroduction课件
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Brief introduction to Newspaper EnglishPPT课件
5
5. Page Arrangements of English Newspapers
1. Masthead (报头）: on the top of the front page
– Nameplate: the name of a newspaper on the top of the front page in large, capital letters
Brief Introduction to Newspaper English
1
1. The Origin of English Newspaper:
– The first English newspaper appeared in 59 BC. At that time Julius Caesar was in charge of Rome. This newspaper – “the Acto Diurna” is the very beginning of all English newspapers.
– The earliest rudiment of newspaper that was still well kept came into being in Germany in 1609. In 1621, London began to have a printing called “Corantos” published to the public. Similar staff didn’t come out till 1704 in America. Since then, the English newspapers turned over the first page in history.
2
5. Page Arrangements of English Newspapers
1. Masthead (报头）: on the top of the front page
– Nameplate: the name of a newspaper on the top of the front page in large, capital letters
Brief Introduction to Newspaper English
1
1. The Origin of English Newspaper:
– The first English newspaper appeared in 59 BC. At that time Julius Caesar was in charge of Rome. This newspaper – “the Acto Diurna” is the very beginning of all English newspapers.
– The earliest rudiment of newspaper that was still well kept came into being in Germany in 1609. In 1621, London began to have a printing called “Corantos” published to the public. Similar staff didn’t come out till 1704 in America. Since then, the English newspapers turned over the first page in history.
2
备忘录(memo) PPT课件
her fourth year with SET Branch Company.
2. Donald Bush from the R&D Department. He is in his
second year with our headquarters.
They will be arriving in June 30. please make
目了然； 6. body:在以上书端内容下空一两行写正文（body），语
言简要明了，表达清楚；正文部分可免去称呼和客套语. 7. Reference Initials：有时在正文下空一行处需写上经手人
姓名或姓名首字母；该部分可省略. 8. 有些备忘录如需留副本，可加上cc.( carbon copy，副
11
Memorandum To: General Manager From: Wang Gang, Manager of Rongxin Ex-im Company Date: Sept.3 Re.: Delivery of Goods
Mr. Wang Gang called at 9 a.m. He says they haven’t received our goods so far. We should contact him immediately if we haven’t delivered the goods yet. Otherwise they would have to cancel the order.
arrangement for these two newcomers to have their own
office. Let me know if you need more details.
unit1 brief introduction
Para 2/3/4/5
Why do those MNEs adopt such investment strategies? (please think about it)
Direct investment Buying
Joint venture
Para 6/7
What can be trade internationally?
Countries
US, the EC, Japan.
Please pay attention to the share of each country.
Area of economic growth potential
• Reason:
I II
Forecast growth Import barriers and perceived entry barriers
Global linkages
• What are nations facing under global linkages?
As a result, nations are much more affected by international business than ever before. Nations share tremendous opportunities as well as threats. (please think about this environment and its effect)
Attraction: Developing country’s policy. Reason: Some countries sell their industries by government to private buyers.
法国普罗旺斯介绍PPT课件
and even candles with lavender. In their heart,
lavender is an important part of their life.
Lavender Yeah, everywhere open. Blue flowers leaves, full of fragrance. I'm the king, you are queen. Throwing coins, may a wish. Love your life, this love enduring. - British folk song "Lavender"
3)Scenery:
You will be attracted by its green hills, olive trees, and old towns with pretty houses. Visitors can find forests, colorful flowers, horses, and people with smiles there.
Luberon mountainous area (鲁伯隆山区) and Simiane-la-Rotonde (施米亚那山区) are the most beautiful valley across France . And there have many kinds of lavenders.
薰衣草呀，遍地开放。 蓝花绿叶，清香满怀。 我为国王，你是王后。 抛下硬币，许个心愿。 爱你一生，此情ቤተ መጻሕፍቲ ባይዱ渝。 ——英国民谣《薰衣草》
May to July are the best tourist months. Not only the blue sky, the sweet smell of olive, but also the blooming lavenders, make Provence sends out the breath of romantic.
lavender is an important part of their life.
Lavender Yeah, everywhere open. Blue flowers leaves, full of fragrance. I'm the king, you are queen. Throwing coins, may a wish. Love your life, this love enduring. - British folk song "Lavender"
3)Scenery:
You will be attracted by its green hills, olive trees, and old towns with pretty houses. Visitors can find forests, colorful flowers, horses, and people with smiles there.
Luberon mountainous area (鲁伯隆山区) and Simiane-la-Rotonde (施米亚那山区) are the most beautiful valley across France . And there have many kinds of lavenders.
薰衣草呀，遍地开放。 蓝花绿叶，清香满怀。 我为国王，你是王后。 抛下硬币，许个心愿。 爱你一生，此情ቤተ መጻሕፍቲ ባይዱ渝。 ——英国民谣《薰衣草》
May to July are the best tourist months. Not only the blue sky, the sweet smell of olive, but also the blooming lavenders, make Provence sends out the breath of romantic.
中国简介(英文版)brief introduction of China-ppt课件
Chinese Culture
— Traditional Festivals
Spring Festival
F业ire务crackers
Qing流m程ing Festival
Dumplings
Couplet
Go hiking
Ancestor worship
Chinese Culture
— Traditional Festivals
Symbols of China
— Giant Panda
the most famous animal is Giant panda. They are one of the most precious animals in the world.
People all over the world like them very much because they are cute and lovely. Now, there are so many pandas have been sent to other countries as a bond of friendship.
Pakistan
China
Shandong province
Pacific Ocean.
Population
▪ 1.4 billions ▪ 56 ethnic groups, most of people are Han. ▪ Territory area: 9.6 millions square km
Dragon Boat Festival
Dragon boat race
Md-aiutumn Day
Zong zi
Appreciating the moon Moon cakes
概述Briefintroductionppt课件
2019/10/11
配位效应
2019/10/11
Sx106 mol/L
10 同离子效应
8
络合作用 6
4
2
S最小
0 5 432 1 0
pCl=2.4
pCl
S(AgCl)-pCl曲线
讨论：
1）配位效应促使沉淀-溶解平衡移向溶解一方， 从而增大溶解度
2）当沉淀剂本身又是配位剂时，应避免加入
过多;既有同离子效应，又有配位效应，应
CH2SO4 [HSO4 ] [SO42 ]
SO42
[SO42 ] C H2SO4
[
H
Ka2 ] Ka2
102 102 102
0.5
[SO42 ] C
而 [Ba2 ]
H2
SO4 0.02
0.02 SO42 2 0.5
1.0102 mol
注： 因为酸度变化，构晶离子会与溶液中的H+或
OH-反应，降低了构晶离子的浓度，使沉淀溶解 平衡移向溶解，从而使沉淀溶解度增大
2019/10/11
图示 溶液酸度对CaC2O4溶解度的影响
CaC2O4
C2O42- + H+ HC2O4-+H+
Ca2+ + C2O42-
HC2O4H2C2O4
2019/10/11
a MA（ 水 ）
注：T一定，aMA（H2O）一定为常数 （106 ~ 109 mol / L，极小）
2019/10/11
溶解度S：
难 溶 化 合 物 在 水 溶 液 中 的 浓 度 ， 为 水 中 分子浓度和离子浓度之和
S S0 [M ] S0 [A ] [M ] [A ]
配位效应
2019/10/11
Sx106 mol/L
10 同离子效应
8
络合作用 6
4
2
S最小
0 5 432 1 0
pCl=2.4
pCl
S(AgCl)-pCl曲线
讨论：
1）配位效应促使沉淀-溶解平衡移向溶解一方， 从而增大溶解度
2）当沉淀剂本身又是配位剂时，应避免加入
过多;既有同离子效应，又有配位效应，应
CH2SO4 [HSO4 ] [SO42 ]
SO42
[SO42 ] C H2SO4
[
H
Ka2 ] Ka2
102 102 102
0.5
[SO42 ] C
而 [Ba2 ]
H2
SO4 0.02
0.02 SO42 2 0.5
1.0102 mol
注： 因为酸度变化，构晶离子会与溶液中的H+或
OH-反应，降低了构晶离子的浓度，使沉淀溶解 平衡移向溶解，从而使沉淀溶解度增大
2019/10/11
图示 溶液酸度对CaC2O4溶解度的影响
CaC2O4
C2O42- + H+ HC2O4-+H+
Ca2+ + C2O42-
HC2O4H2C2O4
2019/10/11
a MA（ 水 ）
注：T一定，aMA（H2O）一定为常数 （106 ~ 109 mol / L，极小）
2019/10/11
溶解度S：
难 溶 化 合 物 在 水 溶 液 中 的 浓 度 ， 为 水 中 分子浓度和离子浓度之和
S S0 [M ] S0 [A ] [M ] [A ]
A brief introduction to literature 现代大学英语精读5课件
relation with the hero or heroine), • minor characters(in remote and static relation
with the hero) , • foils（陪衬help to enhance the intensity of
the hero by strengthening or contrasting ）
Elements of the novel
• 3. Setting : the background against which a character is depicted or an event is narrated. It helps to make possible the events in the novel. It goes along with every event in the novel.
A brief introduction to literature
• 5) sociological novel treats social, political or religious problems, call attention to certain social problems and sometimes offer solutions.
Elements of the novel
4. plot:
A plot is the deliberately arranged sequence of interrelated events/ happenings which convey the novelist’s ideas and constitute the basic narrative structure of a novel or a short story. Sometimes it is called a story line. Very often a plot starts from a significant conflict. This conflict sets the plot of a story in motion. It retains the reader’s attention, builds the suspense of the work and arouses the expectation for the events that are to follow. The plot of
with the hero) , • foils（陪衬help to enhance the intensity of
the hero by strengthening or contrasting ）
Elements of the novel
• 3. Setting : the background against which a character is depicted or an event is narrated. It helps to make possible the events in the novel. It goes along with every event in the novel.
A brief introduction to literature
• 5) sociological novel treats social, political or religious problems, call attention to certain social problems and sometimes offer solutions.
Elements of the novel
4. plot:
A plot is the deliberately arranged sequence of interrelated events/ happenings which convey the novelist’s ideas and constitute the basic narrative structure of a novel or a short story. Sometimes it is called a story line. Very often a plot starts from a significant conflict. This conflict sets the plot of a story in motion. It retains the reader’s attention, builds the suspense of the work and arouses the expectation for the events that are to follow. The plot of
英国文化 unit 1 brief introduction1
-What is the EU?
GP: Definition, benefit of EU membership National debt top3 credit rating agencies
1.4 London
Brief
introduction
The significant role of London
1.1 Complicated?
Name
( the UK, Britain…)
Component/constituent
(country, population)
Distinction
(identity, class-structured, regional/economic difference)
5.3 Vikings/Scandinavian
the
Norse (Scandinavian) explorers, warriors, merchants, and pirates. Vikings and buffet
5.4 William the Conqueror
William I , William the Conqueror , Duke of Normandy, was the first Norman King of England from Christmas 1066 until his death. heavy taxes, feudal system(landlords,serfdom) Tower of London
1.2 Political system
君主立宪制constitutional monarchy+议会民主制 Parliamentary democracy --a queen: Queen Elizabeth II --a parliament: Prime Minister David Cameron; 上 议院the House of Lords & 下议院the House of Commons
GP: Definition, benefit of EU membership National debt top3 credit rating agencies
1.4 London
Brief
introduction
The significant role of London
1.1 Complicated?
Name
( the UK, Britain…)
Component/constituent
(country, population)
Distinction
(identity, class-structured, regional/economic difference)
5.3 Vikings/Scandinavian
the
Norse (Scandinavian) explorers, warriors, merchants, and pirates. Vikings and buffet
5.4 William the Conqueror
William I , William the Conqueror , Duke of Normandy, was the first Norman King of England from Christmas 1066 until his death. heavy taxes, feudal system(landlords,serfdom) Tower of London
1.2 Political system
君主立宪制constitutional monarchy+议会民主制 Parliamentary democracy --a queen: Queen Elizabeth II --a parliament: Prime Minister David Cameron; 上 议院the House of Lords & 下议院the House of Commons
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沉淀形式↓
称量形式
洗涤 灼烧 待测离子 沉淀剂 沉淀形式 处理过程 称量形式
注：称量形式与沉淀形式可以相同，也可以不同
2020/8/13
NWNU-Department of Chemistry
2)要求 (1)对沉淀形式的要求
a．溶解度小 b．易过滤和洗涤 c．纯净，不含杂质 d．易转化成称量形式 (2)对称量形式的要求 a．确定的化学组成 b．性质稳定 c．较大的摩尔质量
剂，被测金属离子在电极上析出。
7.1.3 特点
准确度高，但是费时，繁琐，不适合微量组分
2020/8/13
NWNU-Department of Chemistry
7.1.4 重量分析法
重量分析法包括内容：
1.几个概念 2.沉淀重量法的分析过程和要求 3.溶解度及其影响因素 4.沉淀的类型和形成 5.影响沉淀纯净的因素 6.沉淀条件的选择 7.沉淀的过滤、洗涤及烘干、灼烧 8.结果的计算
2020/8/13
NWNU-Department of Chemistry
7.1 概述(Brief introduction)
7.1.1 重量分析法(gravimetry)
• 通过称量被测组分的质量来确定被测组分百 分含量的分析方法
7.1.2 分类
气化法（挥发法）——利用物质的挥发性不同 沉淀法——利用沉淀反应 电解法——利用电解的原理，用电子作沉淀
2020/8/13
NWNU-Department of Chemistry
1. 基本概念
1) 沉淀重量法：利用沉淀反应将待测组 分以难溶化合物形式沉淀下来，经过滤、 洗涤、烘干、灼烧后，转化成具有确定 组成的称量形式，称量并计算被测组分 含量的分析方法。
2)沉淀形式：往试液中加入适当的沉淀剂，使
被测组分沉淀出来，所得的沉淀称为~。
❖ (1) 固 有 溶 解 度 S0 ： 微 溶 化 合 物 的 分 子 溶 解 度 称
为～
平衡常数
S0
a MA（水） a MA（ 固 ）
a MA（ 水 ）
注：T一定，aMA（H2O）一定为常数 （106 ~ 109 mol / L，极小）
2020/8/13
NWNU-Department of Chemistry
K SP
[M ][ A]
[M '][ A']
M A
K
' SP
M A
或
K SP
[M][A]
[M'] M
[A'] A
K
' SP
M
A
条件溶度积
K
' SP
[M
' ][
A' ]
KSP
M
A
或
K
' SP
[M '][ A']
KSP
M A
M
1 ，A
1
，K
' SP
K SP
副反应的发生使溶度积增大
S' [M '] [A']
K SP
M A
K SP M A
2020/8/13
NWNU-Department of Chemistry
7.2.2 影响沉淀溶解度的因素
(Factors that affect solubility)
1.同离子效应(Common ion effect)
沉 到
淀 的
形 称
式量为形M式g为NHM4gP2OP24O，7 ，经 则灼 沉烧 淀后 形得
式与称量形式不同。
• BaSO4------BaSO4
• CaCO3-----CaO, CaC2O4-----CaO,
• Al(OH)3-----Al2O3
2020/8/13
NWNU-Department of Chemistry
溶解度S：
❖难 溶 化 合 物 在 水 溶 液 中 的 浓 度 ， 为 水 中 分子浓度和离子浓度之和
S S0 [M ] S0 [A ] [M ] [A ]
• 2. 活度积(activity product constant—Kap)
K
aM aA a MA（ 水 ）
aM aA S0
• A1(C9H6NO)3：A1＝1：x
•
x＝0.06 mg
2020/8/13
NWNU-Department of Chemistry
7.2 沉淀溶解度及其影响因素
7.2.1 溶解度与溶度积
1.固有溶解度和溶解度(solubility)
MA（固）
MA（水）
M+ + A-
沉淀平衡 以分子形式溶解 进一步解离
常用仪器
2020/8/13
NWNU-Department of Chemistry
2. 沉淀重量法的分析过程和要求
1)分析过程
过滤 8000C
Ba2+ + SO42-
BaSO4↓ 洗涤
BaSO4 灼烧 过滤 烘干
Ca2+ + C2O42-
CaC2O4•2H2O ↓
CaO
ห้องสมุดไป่ตู้洗涤 灼烧
过滤 烘干
试样溶液+沉淀剂
对于MA型沉淀
S [M ] [A ]
K SP
K
0 ap
M A
对于M m An型沉淀
K SP [M n ]m [N m ]n （mS）m（ nS）n mm nn S mn
1
S
K SP mmnn
mn
2020/8/13
NWNU-Department of Chemistry
4. 条件溶度积(solubility product constant)
2020/8/13
NWNU-Department of Chemistry
例1：
测定铝时,称量形式可以是Al2O3(M=101.96)或 8-羟基喹啉铝(M=459.44)。如果在操作过程中 损失沉淀1mg,以A12O3为称量形式时铝的损失 量:
A12O3：2A1=1：x x=0.5 mg
• 以8-羟基喹啉铝为称量形式时铝的损失量 :
3)称量形式：沉淀经烘干或灼烧后，得到 称量形式，然后再由称量形式的化学组 成和重量，便可算出被测组分的含量。
2020/8/13
NWNU-Department of Chemistry
沉淀形式与称量形式关系
• 沉淀形式与称量形式可以相同，也可
以不相同，例如测定C1-时，加入沉淀
剂 形A式g和NO称3以量得形到式A相g同Cl。沉但淀测，定此M时g沉2+时淀，
K
0 ap
K S0
aM
aA
活度积
Ka0p
aM
a
A(T一定，K
0 为常数)
ap
K
0 ap
aM
aA
[M ] γM
[A ] γ A
溶度积
K SP
K
0 ap
γ M γ A
[M ][A ]
2020/8/13
NWNU-Department of Chemistry
3. 溶度积(solubility product constant—Ksp)